Hi i'm not sure how long after but the sperm has to travel and find the egg and then go through the egg and then down the falliopan tube srry for mispell, and do all this other stuff the doc told me, but i'm 7 weeks pregnant and I found out at 6 wks so I think it varys but the soonest I predict u can tell 4-5 wks would be the earliest if u find out it's any sooner write me back kk.

God bless you and good luck
chanee

Lets just say I stepped outside my relationship. And I had unprotected sex with that person. I took a pregnancy test four days later and it said I was pregnant. Could I find out that early or did I get pregnant by my boyfriend.

Ok hun i'm young and i'm no rocket scientist but from what ur telling me u must be pregnant by ur boyfriend cause it takes more the fours after having sex to tell if ur pregnant.Now i'm not 1000% sure but i'm about 80% sure that u were pregnant before stepped out side the relationship so if u did not tell ur bf u cheated I wouldnt because 9 times out of ten it's his.
Ok me personally I would tell I cheated but it's not my business and i'm not hating on u kk good luck and god bless
chanee

If you are for sure pregnant, it's most likely your boyfriends. I've never heard of pregnancy showing up just 4 days after having sex. I wouldn't have sex with your bf again until you get tested for std's though. Since you had sex unprotected with someone else, never know if they had something and you surely don't want to give your bf anything.

I personally would tell him what happened, but whatever you decide to do, it's your choice. I'd just stay in the relationship for now on so you don't cause any unwanted harm to your baby. Good luck.